using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;

using BizHawk.Client.Common;
using BizHawk.Emulation.Cores.Calculators;
using BizHawk.Emulation.Cores.Nintendo.NES;
using BizHawk.Emulation.Cores.Nintendo.SNES;
using BizHawk.Emulation.Cores.PCEngine;

namespace BizHawk.Client.EmuHawk
{
	public partial class ToolBox : Form, IToolForm
	{
		public ToolBox()
		{
			InitializeComponent();
		}

		private void ToolBox_Load(object sender, EventArgs e)
		{
			Location = new Point(
				GlobalWin.MainForm.Location.X + GlobalWin.MainForm.Size.Width,
				GlobalWin.MainForm.Location.Y
			);

			SetTools();
			ToolBoxStrip.Items[0].Select();
			SetText();
		}

		public bool AskSave() { return true;  }
		public bool UpdateBefore { get { return false; } }
		public void UpdateValues() { }

		public void Restart()
		{
			SetTools();
		}

		private void SetTools()
		{
			NesPPUToolbarItem.Visible =
				NesDebuggerToolbarItem.Visible =
				NesGameGenieToolbarItem.Visible =
				NesNameTableToolbarItem.Visible =
				Global.Emulator is NES;

			TI83KeypadToolbarItem.Visible = Global.Emulator is TI83;

			SNESGraphicsDebuggerToolbarItem.Visible =
			SNESGameGenieToolbarItem.Visible =
				Global.Emulator is LibsnesCore;

			GGGameGenieToolbarItem.Visible =
				Global.Game.System == "GG";

			PceBgViewerToolbarItem.Visible = Global.Emulator is PCEngine;
			
			GBGameGenieToolbarItem.Visible = Global.Game.System == "GB";

			foreach (var button in ToolBoxItems)
			{
				var toolBtn = button as ToolStripButton;
				toolBtn.Click += (o, e) => Close();
				toolBtn.Paint += (o, e) => SetText();
			}

			SetSize();
		}

		private void SetSize()
		{
			var tools = ToolBoxItems.ToList();
			
			int iconWidth = tools.Where(i => i.Visible).Max(i => i.Width);
			int iconheight = tools.Where(i => i.Visible).Max(i => i.Height);

			int total = tools.Count;
			bool isOdd = total % 4 != 0;

			int padding = 5;
			int width = iconWidth * 4;
			int height = iconheight * (tools.Count / 4) + (isOdd ? iconheight : 0);
			Size = new Size(width + padding, height + padding);
		}

		private void SetText()
		{
			Text = SelectedButtonText;
		}

		private string SelectedButtonText
		{
			get
			{
				foreach (var button in ToolBoxStrip.Items)
				{
					if (button is ToolStripButton)
					{
						var toolBtn = button as ToolStripButton;
						if (toolBtn.Selected && toolBtn.Visible)
						{
							return toolBtn.ToolTipText;
						}
					}
				}

				return String.Empty;
			}
		}

		/// <summary>
		/// Provide LINQ capabilities to an outdated form collection
		/// </summary>
		private IEnumerable<ToolStripItem> ToolBoxItems
		{
			get
			{
				return ToolBoxStrip.Items.Cast<ToolStripItem>();
			}
		}

		private void CloseBtn_Click(object sender, EventArgs e)
		{
			Close();
		}

		private void CloseBtn_Enter(object sender, EventArgs e)
		{
			ToolBoxStrip.Focus();
		}

		#region Icon Clicks

		private void CheatsToolBarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<Cheats>();
		}

		private void RamWatchToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.LoadRamWatch(true);
		}

		private void RamSearchToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<RamSearch>();
		}

		private void HexEditorToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<HexEditor>();
		}

		private void LuaConsoleToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.OpenLuaConsole();
		}

		private void NesPPUToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<NESPPU>();
		}

		private void NesDebuggerToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<NESDebugger>();
		}

		private void NesGameGenieToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.LoadGameGenieEc();
		}

		private void NesNameTableToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<NESNameTableViewer>();
		}

		private void TI83KeypadToolbarItem_Click(object sender, EventArgs e)
		{
			if (Global.Emulator is TI83)
			{
				GlobalWin.Tools.Load<TI83KeyPad>();
			}
		}

		private void TAStudioToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.LoadTAStudio();
		}

		private void SNESGraphicsDebuggerToolbarItem_Click(object sender, EventArgs e)
		{
			if (Global.Emulator is LibsnesCore)
			{
				GlobalWin.Tools.Load<SNESGraphicsDebugger>();
			}
		}

		private void VirtualpadToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.Tools.Load<VirtualPadForm>();
		}

		private void SNESGameGenieToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.LoadGameGenieEc();
		}

		private void GGGameGenieToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.LoadGameGenieEc();
		}

		private void GBGameGenieToolbarItem_Click(object sender, EventArgs e)
		{
			GlobalWin.MainForm.LoadGameGenieEc();
		}

		private void PceBgViewerToolbarItem_Click(object sender, EventArgs e)
		{
			if (Global.Emulator is PCEngine)
			{
				GlobalWin.Tools.Load<PCEBGViewer>();
			}
		}

		#endregion

		private void toolStripButton1_Click(object sender, EventArgs e)
		{

		}
	}
}